Rocksilk® Soffit Linerboards are used for the thermal and acoustic insulation of soffits in a wide range of both residential and non-residential buildings.

Rocksilk® Soffit Linerboards are non-combustible with the best possible A1 Euroclass reaction to fire classification, making them ideal for the underlining of car parks and garages. Rocksilk® Soffit Linerboards are available in various facing materials.

Rocksilk® Soffit Linerboard Standard is suitable for use as an insulated underlining solution in structural soffits such as underground car parks while Rocksilk® Soffit Linerboard Extra is suitable for use as an insulated underlining solution in semi-exposed structural soffits such as open-sided car parks.

Knauf Insulation Rocksilk® Soffit Linerboard Extra is a rock mineral wool insulation slab with an impact-resistant cementitious facing board, designed to insulate structural soffits in semi-exposed environments such as open-sided car parks. It is non-combustible with the best possible Euroclass A1 reaction to fire classification, and is manufactured using Knauf Insulation's unique plant-based binder, ECOSE® Technology.